Adjustable traveling poweroperated table saw



April 10, 1951 R. YOUNG 2,548,279

ADJUSTABLE TRAVELING POWER-OPERATED TABLE SAW Filed Oct. 1, 1946 2Sheets-Sheet 1 Hlllllllll Hunllllllllllillllllll //VV N 7 0R 4 ag/w/czimam: 7011/29 Gaza/g. Maw

Patented Apr. 10, 1951 ADJUSTABLE TRAVELING POWER- OPERATED TABLE SAWLawrence Romaine Young, Seattle, Wash.

Application'October 1, 1946, Serial No. 700,492

3 Claims. 1

This invention relates to an adjustable traveling power operated tablesaw in which the saw is movable relative to the work.

An'object of this invention is to provide that is simple, durable andinexpensive in construction, that is efficient and accurate inoperation; and one that is easy to operate and that will save time andlabor in ordinary construction and cabinet Work in which wood is used.

Another object is to provide an adjustable traveling power operatedtable saw in which means are provided for tilting a longitudinallymovable driven circular saw blade that extends upwardly througha slot inthe table so that lumber supported on the table inthe path of the sawcan be cut on a bevel. a

I Another object is to provide a longitudinally movable circular sawwhich can be looked as respects longitudinal movement thereof andadjusted to any desired angle between a vertical and a horizontalposition for use as'a fixed saw to which work may be fed. 7

Another object is to provide a power operated Other objects of theinvention will be apparent from the following description taken inconnection with the accompanying drawings.

In the drawings Figure lis a plan view of a power operated table sawconstructed in accordance with this invention.

Fig. 2 is a side elevation of the same looking in the direction ofbroken line 22 of Fig. 1.

Fig. 3 is a fragmentary cross sectional view on a larger scale thanFigs. 1 and 2 taken substantially on broken line 3-3 of Fig. 1, andshowing means for mounting and adjusting and locking a straight edge. I

Fig. 4 is a plan view, with parts in section, taken substantially onbroken line 4-4 of Fig. 2, showing carriage and track means and devicesfor moving the carriage.

Fig. 5 is a view partly in section and partly in elevation takensubstantially on broken line 55 of Fig. 2.

an adjustable traveling power operated table saw of angle shaped crosssection, see Fig. 1.

Fig. 6 is a view partly in section and partlyiin elevation takensubstantially on broken line 6 6 of Fig. 2, an inclined position of thesaw being shown by dot and dash lines. v

Fig. '7 is a view partly in plan and partlyjn section takensubstantially on broken line I-'I of Fig. 2.

Fig. 8 is a view .partly in plan and partly in section takensubstantially on broken line;. 8 of Fig. 5. 3

The drawings show a table comprising two plane fiat horizontal table topsections In and I I supported on' upright frame means 9 and separated bya saw slot I2. A circular saw I3, supported and driven as hereinafterexplained projects upwardly through said saw slot and. is movablelongitudinally of the table Ill-I I A straight edge member I4 issupported atone side of the path of the saw for movement over the tablesection Ill toward and away from the saw. Preferably the straight edgemember I4 is Also preferably the straight edge member I4 has two bearingmembers I5 provided at. opposite ends thereof to receive a tubular shaftI6. The tubular shaft It extends parallel to the straight edge It andcarries two fixedly mounted gear pinions I1} The gear pinions I! arerespectively positioned adjacent the two'ends of the shaft I6, and meshwith toothed rack bars I8. The rack bars I8 are preferably positionedbelow'the level of the table top, as shown'in Fig. 3, toavoidinterference with lumber that is being sawed and said rack'bars I8 aresecured to the table top section III.

The pinions I! are positioned. adjacent the inner sides of theflbeari'ngmembers I5. Two angle brackets I9 are positioned adjacent the outerfaces of the bearing members I5 and are connected with these bearingmembers I5 by means as hereinafter described. j

The horizontal flange of each angle bracket I9, see-Fig. 3, extendsunder the adjacent edge of the table member I0 and cooperates in holdingthe adjacent pinion IT in engagement with its gear rack vI 8. A clampingrod 20 extends through the tubular shaft I6 and through the uprightflanges of the anglev brackets I9. The tubular shaftfllfi also extendsthrough the upright flange of the angle bracket I9 shown at the right inFigs. 1 and 4, and the rod 29 is within this tubular shaft I6. A hand.wheel 2| issecured on the forward end portion of the tubular shaft I6,shown at the right in Figs. 1, 2 and 3 by means such asa spline or keymember ZZthat locks the tubular shaft I6 and hand wheel 2| together forsynchronous turning movement but allows for some longitudinal movementof the hand wheel 2i on the tubular shaft I6. The hub portion of thehand wheel 21 engages with the adjacent angle bracket I9.

A nut member 23 having an integral handle portion 24 is threaded ontothe forward end por tion of the clamping rod 26. The rear end portion ofthe clamping rod 20 carries a fixed member such as a head 25 thatengages with the angle bracket I9 at the rear end of the saw table.

When the nut 23 is tightened against the hand wheel 2| the two anglebrackets 19 will be clamped against opposite ends of the table member Iand the straight edge I4 will be securely locked against movement. Whenthe nut 23 is retracted as respects the hand wheel 2| then the straightedge l4 will be released and the hand wheel 2| and tubular shaft I6 canbe turned to move the straight edge I4 toward or away from the saw.

Preferably the table top section I0 is graduated crosswise in inches tofacilitate setting the straight edge I4 at any desired distance from thepath of movement of the saw. The graduations on the table top sectionII! can also be used,

without reference to the straight edge I4, to indicate the length whichwill be cut off of the end of a piece of lumber that lies crosswise ofthe saw slot l2. Y

A combined hold down and hold over member 26 in the form of a flat pieceof spring metal with an upwardly curved end portion 2! is provided. Thismember 26 is adapted to be attached to the straight edge I4 to hold anypiece of material that is inserted under said member 25 down on thetable. The member 26 is secured, as by a screw 28, to a mounting block29. the member 26 is to be used as a hold down the mounting block 29 issecured to the straight edge 14, as by bolt means 30. -When said member26 is to be used as a hold over then the block 29 is secured to thetable section II as by means of holes '38 and the member 26 engages withthe edge of the piece of wood thatis being sawed.

Preferably a segment 3| of the table top section ID alongside of the sawslot I2 is removable to allow for fixed operation of the saw I3 at thislocation, at an angle greater than said saw can be operated at when inthe slot I2. the saw to be positioned at any angle between a verticaland a horizontal position. Also when the saw shaft is in a verticalposition then the saw I3 can be replaced by a dado saw, a cutter ormatcher head, a sander, or a similar tool.

The table top section II is provided with an angle gauge 32 againstwhich a piece of material that is to be cut at a predetermined angle canbe placed. Preferably this angle gauge 32 is in the nature of a piece ofangle iron attached by a pivot member 33 to the table top section I Iand movable over a dial 34 that is graduated in degrees. A bolt 35 isoperable in an arcuate slot 35 in the table top section I I and extendsthrough the angle gauge 32 and has a wing nut 31 on its upper end. Thebolt 35 canbe used to clamp and hold the angle gauge 32 in any desiredposition.

A saw carriage is mounted below the table Ill-II for movementlongitudinally thereof. This saw carriage comprises a horizontalrectangular frame 40 having four bearing pins M on which wheels .42 aremounted. Each wheel 42 has a circumferential V-shaped groove and Thisallows i When said wheels are supported for movement on 1011-gitudinally disposed parallel track bars 43.

The track bars 43 are adjustable transversely of the saw frame. One wayof providing for this transverse adjustment of the track bars 43 is tosecure said track bars to two cross bars 39 which are positioned at theends of the track bars and are supported on two transverse frame members90. Two adjusting screws 9! are connected with the track bars 43 foradjusting the same, see Fig. 4. A link belt 92 on sprocket wheels 93 canbe used to connect the two screws M. A crank 94 is provided on one ofsaid screws 9I. Rotary movement of crank 94 will simultaneously turnsaid screws to provide the same adjustment of both ends of the trackbars 43.

A brake bar 44 is provided underneath the saw carriage and underneaththe track bars 43 to clamp against said track bars 43 and hold thecarriage in a fixed position when the saw is being used as a stationarysaw and the Work is being fed to the saw. Screw means 45, Fig. 5, havinga hand wheel 46 thereon is provided for clamping the brake 44 againstthe bottom portions of the track bars to hold the carriage in a fixedposition. Two guide pins 95 rigid with frame cooperate in supporting thebrake bar 44.

Two tubular guide members 41 are carried by and extend upwardly from theportion of the frame 40 shown at the right in Fig. 5. Two threaded posts48 are telescopically disposed in the guide members 41' for adjustablysupporting the motor and saw unit, as hereinafter described. Two bevelgears 49 are threaded onto the posts 48 and are supported on the top endportions of the tubular guide members 41. The two bevel gears 49 meshwith two other bevel gears 50 on two horizontal shafts 5|. The twohorizontal shafts 5i are rotatively supported in brackets 52 and areconnected by two pairs of bevel gears 53 with a manuallyadjustable crossshaft 54 that is provided with a crank 55 by which it may be turned. Twouprightbrackets 56 carried by the frame 45 support the shaft 54. Thethreads on the posts 48 and in the hubs of bevel gears 49 are ofrelatively fiat pitch and the friction in these threads andin theadjusting mechanism connected therewith will render this structure selflocking for the diiferent positions into which the posts 48 areadjusted. Obviously a worm wheel and worm can be used in place of thebevel gears 49 and 50.

The top end portion of each threaded post 48, see Fig.8, carries abearing member 51. A transverse frame member 58, Figs. 6 and 8, issupported for angular movement in the bearing members 57. The shaft orarbor 59 which carries the saw i3 is journaled in a tubular bearingmember SI] that is perpendicular to the frame member 58 and rigidtherewith. Motor supporting bracket means 6| is secured to the framemember 53 and extends downwardly therefrom. A platform 62 is carried bythe bracket means 6! and extends at right angles therefrom. The bracketmeans 6i and platform 62 taken together form an L-shaped motor bracket.These parts 6i and 92 together with the frame member 58 and bearing tubeconstitute a swingingly mounted saw supporting frame.

A motor 63 is'secured on the platform 62. A driving connection betweenmotor 63 and the saw shaft 59 is provided by pulley 64, V belt 55 andpulley 65. I

Preferably an end portion of the arbor 59 extends beyond the saw I3 fora substantial dis- 5. tance and is threaded, as shown in Figs. and 6.The saw l3 can be adjusted along this outwardly protruding portion ofthe arbor. This adjustment, is of advantage when the saw is positionedparallel to and above the table Ill-ll and it is desired to keep theframe means 58 entirely beneath the top plane of the table.

Means are provided for angularly adjusting the frame member 58 so as toadjust the angle of the saw 13 to cut on different bevels. This meanscomprises two worm wheels 98 secured to the respective end portions ofthe frame member 58. Two worms 61 carried on two shafts 68 mesh with theworm wheels 98. The shafts 68 are journaled in brackets 69 that arerigid with and carried by the upper end portions of the threaded posts48. The shafts 68 and worms 6! are thus supported for simultaneousvertical movement along with the frame 58 and can be used to angularlymove said frame 58 together with the motor and saw carried thereby.

Two pairs of bevel gears 10 connect the shafts 68 with a manuallyoperable cross shaft H by which the worms 5'! can be simultaneouslyrotated to angularly adjust the frame member 58. Suitable crank means 12is connected with the cross shaft H. The bearing bracket 69 may alsoprovide bearings for the shaft 1 l.

Foot operated means are provided for moving the saw carriage along thetrack members 43 to thereby move the saw relative to the work. Thismeans is adapted to impart a relatively long stroke to the saw inresponse to a relatively short stroke of a foot pedal 8|].

This means comprises a set of relatively crossed pivotally connectedlazy tong levers 13, Fig. 4,

having their front end portions connected by a pivot 14, Figs. 2, 4 and5, with the front portion of the saw carriage 54 and their rear endportions connected by a pivot 15 with a fixed part of the frame 9. Thetwo lazy tong members adjacent the pivot 15 have two shorter lazy tonglinks connected therewith by pivot members 11. A common pivot 18connects these shorter links with an operating cable 19 that extends tothe front end of the machine and is connected with a foot lever 80. Thefoot lever 80 is fulcrumed on a pivot 81 and positioned where it iseasily reached by the operator.

The saw carriage is moved into a retracted position by spring means.This spring means preferably comprises two tension springs 82, Fig. 4,disposed in tubes 83 and connected with the carriage frame 40 by cables84 which pass over sheaves 85.

In the operation of this saw the saw blade 3 extends upwardly throughthe slot I2 and is movable along said slot by operation of the footpedal 80. When the saw is vertically positioned as shown by full linesin Figs. 5 and 6 it will vertically cut any piece of lumber or likematerial that is ositioned across the slot I2. The saw I3 is adjustedinto an inclined position, as shown by dot and dash lines in Fig. 6, byoperating the crank 12, Figs. 2 and 8, and simultaneously adjusting thetracks 43 and carriage supported thereon transversely of the table. Thistransverse adjustment is necessary to properly position the inclined sawin the slot I2. When the saw is thus tilted it will obviously cut on anybevel to which it is set, any material that is supported on the tabletop H in the path of the saw.

The amount to which the saw can be tiltedin the direction shown by dotand dash lines in Fig. 6 is limited only by the clearance of the slot I2and by the length of the portion of shaft 59 which protrudes to theright of the saw as seen in Fig. 6. The saw can also be tilted a limitedamount in a clockwise direction, as respects the showing in Fig. 6, bylowering said saw and angularly moving the bottomend portion of theswinging frame 58, 60, BI, 62 to the left. Angular movement in thisdirection is limited as the belt 65 will tend to contact either theshaft 54 or the under side of the table I I.

By removing the table top segment 3|, Fig. 1, it is possible to positionthe saw l3, or an equiv alent rotary cutter on the shaft 59 in ahorizontal or near horizontal position above the top of the table II.When the device is thus operated the saw l3 can be adjusted or movedoutwardly on the shaft 59 or the member 58 can be adjusted or elevatedabove the table top or both of. these adjustments can be used.

Obviously changes in this invention can be made within the scope of thefollowing claims.

I claim:

1. In a saw, a saw table having a table top provided with alongitudinally extending saw slot; horizontal track means supported bysaid table below said table top; a carriage movable on said track means;two tubular guide members rigid with said carriage and extendingupwardly therefrom; two posts supported for vertical adjustment in saidguide members; means for vertically adjusting said posts; a bearingcarried by the upper end portion of each post; a swinging framesupported for swinging movement and for vertical adjustment by saidbearings; two worm wheels carried by said swinging frame coaxial withsaid bearings; two worms carried by said vertically adjustable postsmeshing with the respective worm wheels for swingingly adjusting saidframe and holding said frame in adjusted position; means forsimultaneously rotating said worms; and a driven circular saw carried bysaid swinging frame and extending upwardly through the slot in saidtable top.

2. In a saw, a table having a table top provided with a longitudinallyextending slot; a carriage positioned below said table top and movablelongitudinally thereof; a longitudinally extending transverselyadjustable track carried by said table and supporting said carriage;lazy tongs means carried by said transversely adjustable track andconnected with said carriage; foot actuated means carried by said trackfor operating said lazy tongs means to impart a relatively long movementto said carriage in response to a relatively short movement of said footactuated means; a frame mounted for transverse tilting movement on saidcarriage; a driven rotary saw carried by said tiltingly mounted frameand extending upwardly through said saw slot; and means for tilting saidframe to position said saw at different angles relative to said tabletop to thereby bevel cut material that rests on said table top.

3. In a saw, a saw table having a table top provided with alongitudinally extending saw slot; horizontal track means supported bysaid table below the table top; devices for adjusting said track meanstransversely of the table top; a carriage movable on said track means,lazy tongs means connected with said carriage for moving the same; afoot pedal operatively connected with said lazy tongs means; a frameswingingly mounted on said carriage; a driven circular saw carried bysaid frame-and extending up through said slot; means for verticallyadjusting said swinging 7 frame relative to said table top; and meansfor angularly adjusting said swinging frame to thereby vary the angle ofsaid saw relative to material on said table.

LAWRENCE ROMAINE YOUNG.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number 8 Name Date Thomes July 20, 1926 MattisonApr. 2, 1929 White Mar. 17, 1931 Tomlinson et a1 July 7, 1931 BennettJuly 28, 1931 Peterson Oct. 6, 1931 Birtles Sept. 5, 1933 Hall Oct. 10,1933 Dutcher Dec. 1, 1936 Tautz Aug. 1, 1939 Boice Aug. 25, 1942 BrayMar. 9, 1943 Sellmeyer June 29, 1943

